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| Numéro |
J. Phys. IV France
Volume 11, Numéro PR8, Novembre 2001
Fifth European Symposium on Martensitic Transformations and Shape Memory Alloys
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| Page(s) | Pr8-185 - Pr8-190 | |
| DOI | https://doi.org/10.1051/jp4:2001832 | |
Fifth European Symposium on Martensitic Transformations and Shape Memory Alloys
J. Phys. IV France 11 (2001) Pr8-185-Pr8-190
DOI: 10.1051/jp4:2001832
Department of Materials Science, Graduate School of Engineering, Tohoku University, Aramaki Aoba-yama 02, Sendai 980-8579, Japan
© EDP Sciences 2001
J. Phys. IV France 11 (2001) Pr8-185-Pr8-190
DOI: 10.1051/jp4:2001832
Effect of grain refinement on the mechanical and shape memory properties of Cu-Al-Mn base alloys
Y. Sutou, T. Omori, T. Okamoto, R. Kainuma and K. IshidaDepartment of Materials Science, Graduate School of Engineering, Tohoku University, Aramaki Aoba-yama 02, Sendai 980-8579, Japan
Abstract
The effect of grain refinement on the mechanical and shape memory (SM) properties of the β phase Cu-Al-Mn alloys with L21, structure were investigated by optical microscopy, scanning electron microscopy, differential scanning calorimetry and tensile-testing. Additions of V or Cr to the Cu-Al-Mn ternary alloy in amounts over 0.5at.%V or 1at.%Cr were effective in refining the β phase grain sizes to less than 200 µm. The Ms temperature decreased with increasing V or Cr content, obeying the Hall-Petch type relation with the β-grain size. The mechanical properties were improved, but the SM and pseudoelastic properties were not improved by grain refinement.
© EDP Sciences 2001